Benefits of Resisted Sprint Training

Benefits of Resisted Sprint Training In the modern day sprint training is the most common method in the new age of sports training, to enhance the ability of an athlete to run at optimum speed, sprint training must be an essential part of an athlete’s training regime (McKenna, M et al, 1997). As equipment advanced so did training methods, therefore to improve performance a certain amount of resistance was added to further enhance an athlete’s performance therefore improving an athlete’s overall speed this was named â€Å"Resisted Sprint Training† (RST) is defined by Alexander 1989 as running at top velocity while resistance forces work in the opposite direction. There is countless ways of applying an opposing force; weighted clothing, sleds containing weights, parachutes with different surface areas and common hills are all used to counter act the sprints being undertaken by the athlete. Due to the research that has gone into this area of RST it has provided coaches with more options to exper iment and implement with their athlete. The author of this review will be analysing literature and research into sled training commonly shortened to ST and whether the common usage of this in a training programme is an effective method to improve certain variables such as acceleration, maximum velocity, force application and finally stride length/frequency. As RST is a popular method for most modern day sports people from low to elite levels, it has an uncertain concluding factor as to the links to improve sprint kinematics. (Faccioni, 1994a) â€Å"The benefits of the use of resisted sprint running is that it recruits more muscle fibers, requires more neural activation† therefore due to this quote the effects of ST have been probed and primed for many years, especially the way the way it influenced the acceleration on track athletes. After completing a study using males taking part in resistance using 10% plus of the participants body mass, a decrease in stride frequency and stride length was evident, while performing the tests other visual physiological differences were evident such as increased muscle flexibility especially in regards to the hip flexors. When concluding their findings in 1994 they found that when carrying a heavier load. Stress was evident on the participants body therefore hampering the test, this is why a lower weight was used to improve acceleration when using ST for RST. Murphy et al 2003 study was establishing the load for sprint training with sled towing in the maximum velocity phase. 12 athletes participated in the study. They ran 30 m flying sprints, an unloaded sprint and sprints pulling loads of 6%, 10%, and 15% of their body mass, on a synthetic track surface wearing spikes, they found that this equitation lets coaches and strength trainers to calculate the load for resisted sprint training with sled towing due to the increase in Mean maximum velocity, 30-m sprint time. These findings support another study that was done in 2004 by LeBlanc, J. S.et al who studied the comparisons and differences between free sprint training and resisted in relation to the key attributes of sprinting in the top phase of the athletes speed. Both results show significant differences and shows signs towards ST being beneficial for sprinters top speed phase. When looking at the literature published the main area of study which has been evident is whether ST increased maximum speed and overall acceleration Hansen, K. T.et al (2006).found that RST with 8% body mass sled towing for 4 week improves transition performance (16-31 m), while traditional sprint training improves performance in the maximum velocity phase (31-51 m) in elite athletes. In contrast to improving overall acceleration and maximum speed studies have been done to improve sprint specific strength Ettema, G. J. C. (2006) et al stated that RST does improve this evidently in the lower body being the legs and lower back, having this strength is always going to beneficial due to the strength of the lower limbs. The way this evaluation was concluded was down to using and comparing a weighted belt for the athlete to wear, a parachute to provided resistance to the athlete and finally the sled to be able to place weights on to provide a resisted force when completed 30 metre flying sprints. It became evident that the sled training was best for developing maximum sprint strength, however the literature contradicts itself when talking about biomechanical properties which could affect the athletes speed therefore further biomechanical analysis needs to be undertaken to provide a coach with exact biomechanical movements to fully utilise the ST. After researching the literature which is available to get a good insight into ST, when talking about biomechanical influences in the ST, the practioners should be using 3D analysis software to enable them to have a clear view of the correct posture and movements in each phase especially when the athlete is being specific to stride length, stride frequency and velocity also as other areas in the forever changing world, further research will give myself a better and broader insight into the ability of ST in relation to RST. Putting a focus into the specifics of each ST session such as sets and repetitions of the training being undertaken this therefore would need to client specific as previously stated the weight of each ST is set to a fix rate, however increasing this could either have a positive or negative effect on success and sustainability. When focusing on the suggested correct amounts of training when concerning sets and reps, no previous research has actually indicated a set number to work from. This is why variation and expert analysis needs to be scrutinised to enable a benchmark to be set for initial improvement. References Alexander, M.J.L. The relationship between muscle strength and sprint kinematics in elite sprinters. Can. J. Sport Sci. 14:148–157. 1989. Cronin, J. B., and Hansen, K. T. (2006). Resisted sprint training for the acceleration phase of sprinting. Strength Cond. J., 28, 42-51 Faccioni, A. (1994a). Assisted and resisted methods for speed development: Part 1 Modern Athlete Coach, 32, 3-6. Kristensen, G. O., van den Tillaar, R., and Ettema, G. J. C. (2006). Velocity specificity in early-phase sprint training. J. Strength Cond. Res., 20, 833-837 LeBlanc, J. S., Gervais, P. L. (2004). Kinematics of assisted and resisted sprinting as compared tonormal free sprinting in trained athletes. Proceedings of the 22th International Symposium onBiomechanics in Sport, Ottawa, Canada 536. Lockie, R. G., Murphy, A. J., and Spinks, C. D. (2003). Effects of resisted sled towing on sprint Kinematics in field-sport atlethes. J. Strength Cond. Res., 17, 760-767. McKenna, M. J., G. J. F. Heigenhauser, R. S. McKelvie, J. D.MacDougall, and N. L. Jones. Sprint training enhances ionic regulation during intense exercise in men. J. Physiol. (Lond.) 501: 687–702, 1997 Murphy, A. J., Lockie, R. G., and Coutts, A. (2003). Kinematic determination of early acceleration in field sport athletes. J. Sports Sci. Med., 2, 144-150.

Discuss your opinion of the recovered memory

Psychologists believe that it is common to consciously repress unpleasant experiences although the unconscious repression of traumatic experiences such as sexual abuse or rape is a defense mechanism that usually backfires (Carroll, 2005). Loftus (1998) wrote an article on â€Å"The Price of Bad Memories† that leaves a room for doubt for people who are contemplating on seeking treatment and those who are already being treated by a psychiatrist.It is difficult for those who are emotionally and psychologically helpless to determine the best possible treatment when their main concern is to seek assistance from mental health professionals who are in the best position to help them gain a better quality of life. In many cases, patients who are subjected to hypnosis, guided imagery, influence of drugs and other methods during therapy sessions to uncover unpleasant memories of childhood sexual abuse, rape, satanic ritual abuse and cult activities are also isolated from their families, friends, and the outside world (United States v.Peterson et al. (n. d. ). Hence, implanting false memories into the minds of patients is not only alarming but also unethical and a serious criminal offense. The case of Patricia Burgus and other patients who were diagnosed with Multiple Personality Disorder (MPD) is a wake-up call to the medical profession. The neglect on the part of the psychiatrist and Rush-Presbyterian-St. Luke's Medical Center with regards to documenting and safeguarding the tape records of the patient’s therapy sessions may earn a questionable mark on the reputation of the professionals and health centers.Questions with regards to the safekeeping of patients’ records may arise. The mix-up of tapes is an indication that tape recordings are not properly labeled with the patient’s name, date of therapy session and the name of the mental health professional who conducted the therapy. There were also failures on the part of the mental health provi ders to keep a hard copy of patient’s therapy, treatment and progress. From the cases that were filed, it is apparent that administrators of the hospitals or medical centers do not impose strict policies in terms of securing patients’ records.The conspiracy among the psychologists, psychiatrists, psychotherapists and medical centers leads us to a thought provoking situation. As one would seek an answer to the question regarding the hidden motives of several mental health professionals who risk their professions and be subjected to malpractice suits by unjustly collecting insurance payments as a result of exaggerating diagnoses and overstating the need for expensive treatments remains doubtful. Psychiatrists maintain patients who seek their treatment and advice on a regular basis.Hence, deriving income at the risk of their profession and reputation is not a motivating factor. The question of benefiting from insurance payments is unbelievable to some extent although ther apy for the treatment of multiple personality disorders may take a long period of time. From the standpoint of a reader who is neither a health professional nor a patient, one may not discount the possibility that these mental health professionals may be subjecting their patients to an experiment in order to test the effectiveness of their technique.However, there is no evidence to prove this accusation. With the multitude of lawsuits filed against the mental health professionals and medical centers regarding claims of corroborated repressed memories, there will be more patients and families who may take advantage of the situation. False accusations regarding misdiagnosis and improper treatment may also grow in numbers as the victims gain awareness of the monetary settlement that may be derived from the litigation.The American Psychological Association (1996) claimed that most people who were sexually abused as children have memories of all or part of what happened to them although they may not fully understand or disclose it. Amidst the controversy on recovered memory, people who are victims of substance and sexual abuse, depression, personal adjustment and problems of relationship should not hesitate to consult their mental health providers. As a precautionary measure, it is important to choose competent professionals and get a referral from the state psychological association in the local community.

Human Genome Project Essay

One of the most challenging questions that have been left unanswered to this date is that regarding human evolution and geography. From the sociological point of view, it has long been known that specific populations can be differentiated from each other based on their religious backgrounds. On the other hand, forensic science employs language in grouping human population. In the field of human genetics, there is currently credible information that facilitates the understanding of how the entire human population evolved through time. The recent completion of the Human Genome Project resulted in the generation of the actual deoxyribonucleic acid (DNA) sequence of a human cell, with the hope that every disease could be associated to a particular gene in the sequence. Alongside this discovery, other genetic features have been uncovered in the DNA sequence, including small nucleotide polymorphisms which serve as signatures to specific biological phenomenon. In Olson’s chapter entitled â€Å"God’s people: A genetic history of the Jews,† the evolution of this population was described in terms of selection, environmental factors, adaptation and migration (Olson 107). The chapter supported this description with reports generated from haplotype reconstruction and tracing of Aaron’s Y chromosome. Through DNA sequencing analyses, it is now possible to reconstruct the origins and migrations of specific populations based on the presence or absence of genetic markers in the human genome sequence. The most interesting part of the chapter is that genetic changes in the Samaritan population can be correlated to their historical account, including the time when these individuals were under persecution by the Roman government. This historical event resulted in a significant decrease in their population size. In response to the change in population size, the Samaritans underwent what is genetically termed inbreeding, which is simply the action of consanguinity. Despite common notions that consanguinity results in serious health risks, this population survived through thousands of years. One major observation among the Samaritans is that these individuals physically appear similar and this is mainly due to inbreeding. Interestingly, the expected medical diseases that are commonly brought about by intermarriages did not develop in the next generations and this may be due to the selection against these defective genotypes. Another process that could be associated with this scenario is the bottleneck effect, which selectively retains the beneficial genes to the next generation. Today, it has been estimated that approximately 13 million Jews are living in the Middle East. The contemporary Jews are technically grouped into Ashkenazi or non-Ashkenazi, based on their ancestry through regions around Europe. These individuals are a good population to follow in terms of genetic history, since this population carries a natural history of migration and evolution through time. The non-Ashkenazi Jews are considered as the highly migratory subpopulation, resulting in a diverse culture. On the other hand, the Ashkenazi Jews generally remained in the same region, thus preserving their genetic makeup. This geographical history thus resulted in the identification of specific genetic mutations and diseases that are inherently observed among members of this population. The chapter also attempted to describe the effect of founding mutations, which are initial mutations that have occurred early in time during the migratory and settling era of the population. The subsequent generations of this population resulted in the presence of the same diseases and mutations, the most possible explanation for this is that these formerly de novo mutations have been fixed in the genome sequence of the offspring. It should be understood that genetic mutations occur in germ cells, as well as in somatic cells, and these have the propensity to be passed on to the next generation through the genetic laws of independent assortment and segregation. The analysis of sequences derived from mitochondrial DNA have also revealed that the founder mutations reported among the Jews were transmitted through a matrilineal route (Behar 2062). Using mitochondrial DNA tracking, genetic analysis can generate estimations of the time of fixation of a specific genetic mutation in this population. The continuous geographical changes of the members of this population further exert its impact on the genetic fixation and phenotypic frequencies of these mutations, resulting in the current genetic conditions of this group. The genetic pool of the Jews thus reflects a microenvironment wherein genetic changes, alongside environmental effects and migration could be correlated with each other. There is still great debate with regards to the genetic history of the Jews. As Olson has indeed mentioned in his writing, all human beings are similar in the genetics aspect and being a Jew is simply based on how an individual feels about himself. This maybe true, yet in time there will still be more information that will be gathered from genetic assays on different populations around the world. The current information that has been established is that there are three founding mutations that have been identified in the Jews and each mutation reflects the origin or migratory pattern of each subgroup. However, the exact direction or genetic drift of each migratory pattern still needs to be further investigated. There is a need for a comprehensive genotyping of more individuals of each human population in order to fully understand the historical, as well as geographical account of human evolution and speciation. Each existing population must have been derived from an original group of individuals that existed in time. 2. The article entitled, â€Å"Jewish legacy inscribed on genes† authored by Karen Kaplan describes the account of Gregory Cochran regarding the genes of Jewish individuals (Kaplan 3). One of his claims is that Ashkenazi Jews are more prone to serious medical disorders due to the common mutations that afflict this specific population. One of the highly publicized medical disorders that commonly occur among Ashkenazi Jews is Tay-Sachs disease, a neurological childhood condition that leaves an individual disabled and complications result in difficulty of these individual’s to lead normal lives. Another common genetic disorder affecting Jews is Canavan disease, which involves the deterioration of the brain tissues, resulting in both morbidity and mortality in young Ashkenazi Jewish children. Niemann-Pick disease is another serious medical condition that is often reported among this specific human population and this disease is associated with the significant accumulation of fats in the particular organs such as the brain. Unfortunately, these aforementioned medical disorders result in mortality of an Ashkenazi Jew at a very young age. Another medical disorder that occurs frequently among Ashkenazi Jews is torsion dystonia, which is a movement disorder that involves changes in the tissue consistency of the brain. The accumulation of plaques in the brain results in the involuntary jerking and twisting of parts or even the entire body of the afflicted individual. Cochran claims that these common medical disorders affect Ashkenazi Jews in particular through a specific genetic makeup that still has yet to be uncovered. It is also of interest to know that these common disorders are of neurological origin, which means that the central nervous system of an individual is affected. Thus, these disorders can either affect the brain, the spinal cord, or any of the smaller neural cells that are connected or associated with the nervous system. In order for the public to better understand his claim, Cochran even compared this association to that of sickle cell anemia, which is a severe blood disorder that is commonly observed among African Americans. This genetic blood disorder results in the difficulty to transport oxygen to the rest of the parts of the body, as the red blood cells are distorted in shape, from the normal ovoid shape to that similar to a sickle. Comprehensive scientific research has established that a specific mutation is responsible for the generation of a sickle cell-shaped red blood cell, which in turn is commonly present in individuals of African American descent. Another claim of Gregory Cochran is that despite such serious medical disorders that commonly affect Ashkenazi Jews, a positive observation is also significantly present in this human population. Cochran claimed that Ashkenazi Jews are highly intelligent, as shown by intelligence quotient (IQ) scores of children of this ethnicity. He thus proposed that the predisposition of Ashkenazi Jews to mutations in gene associated with brain conditions also results in a high level of intelligence. Kaplan’s article further supports Cochran’s claim of intelligence and gene mutations with the historical accounts of how Jews lives through the centuries. The activities mainly involved migration, trading and other forms of business, all of which were highly successful. Kaplan supported Cochran’s claim by saying that these business transactions can only survive if the individuals involved were highly intelligent and since most of the activities were led by Ashkenazi Jews, then it is also likely that the intelligence â€Å"phenomenon† may have existed early on. Unfortunately, the claims of Cochran still need to be tested on a large population of Ashkenazi Jews before this can be proven and accepted. As Kaplan accounts in her Los Angeles Times article, the report of Cochran was an outright reject in the first journal that he and his collaborator, Harpending, submitted to. However, another journal that supports theories without substantial experimental evidence, Journal of Biosocial Science, published their claim. The claim of high intelligence among Ashkenazi Jews needs to undergo comprehensive investigation first before it can be fully accepted in the field of science. Similar to the genetic establishment of the neurological diseases that commonly affect Ashkenazi Jews, this claim was further strengthened after several years of scientific research in genetic laboratories. Patients positively diagnosed with the neurological disease were checked with regards to other clinical features. In addition, their DNA was extracted and the specific genes responsible for generating the disease were sequenced. In case a DNA mutation was identified in the genes, these were compared to other patients’ DNA sequences. Any other common features among thousands of patients were correlated and compared, thus resulting in what has now been established as a predisposition of the disease in this human population. It is thus important that the same meticulous type of investigation be conducted with regards to intelligence. However, the search for the answer to this claim may be more difficult because intelligence has been established to be influence by several factors. Scientists and psychologists have earlier established that the multi-factorial origin of intelligence makes any effort in tracing the source of intelligence to be ultimately difficult. Intelligence can not simply be generated through the genes because environmental factors can also affect an individual’s condition, including his mental state. There are a number of twin studies that have been conducted for several decades that employ the procedure of separating each of the twins are bringing each individual up in a different environment. Since the genetic makeup of twins is entirely the same, then any claims on intelligence genes can be validated in such experimental conditions. Unfortunately, twin studies have proven that a child who was brought up in an environment filled with violence and anger tend to be poorly developed in intelligence. On the other hand, the twin sibling who was raised in an environment that was filled with love and support grew up into a very intelligent and mature individual. It is thus difficult to prove Cochran’s claim that Ashkenazi Jews are far more intelligent than other human populations, because there are so many factors to consider before one can claim that a specific entity influences that state of thinking. Another issue that would emanate from such claim is that other cultures and ethnicities would perceive such proposal as a form of discrimination or indifference to other human populations. Claiming or even proving that a certain human population is highly intelligent does not help in the global cooperation between countries. In addition, the establishment of this claim will not save lives, just like the other efforts that employ genetic technologies in screening for specific mutations that would tie a particular phenotype to a particular genetic sequence. Proving the high levels of intelligence among Ashkenazi Jews will only spark anger and outrage from other cultures. It is thus good that Cochran feels that there is no need to prove his claim through the use of experimental evidence. It would also be safe and for the best of the rest of the world to leave Cochran along with his claim and let other people speculate on his unsupported claim. The application of genetic analysis on human population has been regarded as a novel and revolutionary addition to the methods in studying human evolution and speciation. The information that can be generated by this technology can be very sensitive and effective, yet there is still a need to employ human intervention and compassion with regards to which specific questions need to be addressed. Genetic analysis in connection to medical disorders can be very helpful in diagnostics and treatment, as well as for saving lives, but genetic screening other social factors such as intelligence will only spark bias among individuals around the world. Works Cited Behar, D. M., Metspalu, E. , Kivisild, T. , Rosset, S. , Tzur, S. , Hadid, Y. , Yudkovsky, G. , Rosengarten, D. , Pereira, L. , Amorim, A. , Kutuev, I. , Gurwitz, D. , Bonne-Tamir, B. , Villems, R. and Skorecki, K. â€Å"Counting the Founders: The Matrilineal Genetic Ancestry of the Jewish Diaspora. † PLoS ONE 3 (2008): 2062-2087. Kaplan, K. â€Å"Jewish Legacy Inscribed on Genes? † Los Angeles Times 18 April 2009. Olson, S. Mapping Human History: Genes, Race, and Our Common Origins. San Francisco: Harcourt Publishers, 2003.

Driverless Cars Are Cars Really Safe Like Everyone Says

Driverless Cars Are driverless cars really safe like everyone says? Are they better like everyone says? Will they meet everyone’s needs? And the real question is, are we ready for driverless cars? The insurance companies also have to be ready for driverless cars, which they are not. A driverless car may be safer but would it take the out of driving while lessening driver’s responsibilities? (Crowe)There are many upsides about driverless cars as well as there are downfalls. It honestly depends on what kind of person you are and if you like driving or not. Like for example there would be no joy going on vacation and going through twist and turns. You may hate driving and that’s where you will like driverless cars because it can drop you†¦show more content†¦But what happens when the driverless car goes wrong? What if it crashes? Do we sue the manufacturer because there product didn’t work? See here’s so many questions about a driverless car. Like how does it even work? Does it work? Why would we want this? Theres not really any goood reason why we want this just so we can be even more lazier then we already are? Most people thinks that driverless cars will be much safer and more efficient. A million fewer road deaths a year is just the beginning (Laird).Each year 30,000 people die in traffic collisions in the U.S. considering that 90% of U.S. auto collisions are blamed from human error- Some 40% are the result of factors such as alchohol or fatigue- we have a lot to gain by outsourcing the task of driving to computers(Griffith). Even if 10% of vehicles are autonoumous, traffic will improve drastically (Brown). If 10% of vehicles were self-driving, it could reduce the number of accidents by 211,000 and in turn save 1,100 lives, according to a 2013 study by the eno center for transportation in Washington, D.C. (Griffith). If 90% of vehicles were autonoumous, an estimated 4.2 million accidents would be prevented and 21,700 lives would be saved (griffith) . 5 main advantages of driverless cars are 1. Less or no more accidents. 2. Elderley and disabled people are able to drive wherever they want to. 3. No more boring drivving on highways (and no more tickets for speed excess†¦). 4. Stop looking for parking spots.Show MoreRelatedGoogle Self Driving Car Marketing Plan Essay11358 Words   |  46 PagesGoogle self-drving cars Instructor Dr. Antonie J. Jetter Team 2 Abhishek Jain Jing Jiang Jonathan Lui Rohit DSouza Standley Limarta Contents 1 Abstract 4 2 Company Overview 4 3 Partnerships and Strategic Alliance 5 4 Product Analysis 5 4.1 Product value 5 4.2 Technology Assessment 5 4.3 SWOT analysis 7 5 Value Proposition 9 5.1 Safety 9 5.2 Economics 10 5.3 Productivity 10 6 Market Analysis 11 6.1 Market Demographics 11 6.2 Market Trends 12 Read MoreOrganisational Theory230255 Words   |  922 Pagesusefully situates organization theory within the scholarly debates on modernism and postmodernism, and provides an advanced introduction to the heterogeneous study of organizations, including chapters on phenomenology, critical theory and psychoanalysis. Like all good textbooks, the book is accessible, well researched and readers are encouraged to view chapters as a starting point for getting to grips with the field of organization theory. Dr Martin Brigham, Lancaster University, UK McAuley et al. provide